FR7534E - Microphonograph device - Google Patents

Microphonograph device

Info

Publication number
FR7534E
FR7534E FR7534DA FR7534E FR 7534 E FR7534 E FR 7534E FR 7534D A FR7534D A FR 7534DA FR 7534 E FR7534 E FR 7534E
Authority
FR
France
Prior art keywords
microphonograph
microphonograph device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Eugene Ducretet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of FR7534E publication Critical patent/FR7534E/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B25/00Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
    • G11B25/04Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
FR7534D 1906-03-12 1907-04-02 Microphonograph device Expired FR7534E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR364162T 1906-03-12
FR7534T 1907-04-02

Publications (1)

Publication Number Publication Date
FR7534E true FR7534E (en) 1907-08-21

Family

ID=1350322

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7534D Expired FR7534E (en) 1906-03-12 1907-04-02 Microphonograph device

Country Status (1)

Country Link
FR (1) FR7534E (en)

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